Automobile instrument light



W, J. CALLAHAN AUTUMOBILE lNSTRUMENT LIGHT:

. APPUCATWN FILED JAN. 24. 192i.

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AU'ZGMGBELE ENfiTRlFMENT LIGHT.

Application filed Sanuaxfr 2a, 1921.

2' '0 all 1050172 if may (.(T'llaffl'll lie it known that lriiimz-ilu J. CALM: nan, a citizen oil. tho. United Hint residing at l'l orccstcr. Ill tr county 01" orcestcr and of lriassach Light, of which the toll c lQl l. 1 i

This invention relata-ts to an automobiic instrument light and parhicularly to in proved dsviccs for suppor in' and forming electrical contact with a illuminating a motomctsr or other similar device on tho radiator cap. it is csrntial that such a light should no suppori'cd readily removed with the raf that when "Will be cc.

la; is he objcct of my invention to provide improved devices for thus supporting and contacting with an automobile instrument light, including certain novel constructions by which the contact may be easily inadc and securely maintained.

Y y inintion further rclatcs to ilfllll'ffi iii-ants and combinations of parts which will behercina'ftor descrilpu-wd and more particularly pointed out in "the appended claims.

lrcicrred forms of my in vention are shown in the drawings, in which- Fig: l is a sidc elevation, partly in section, or" my improved light and support;

Fig. 2 is a sidc elevation. oi a certain modification, and

Fig. 3 a partial plan View taken along the line 3-3 in Fig. 1.

Referring to the draw nns, l have indicated a portion of a radiator casing;- 10, a radiator filler pipe 11, and a radiator Cap 12 on which is nionnicd niotomctcr 11.3 or other similar instrument. A spring plate 1% is securcd to the top of the radiator cap 12, prefcrably by screws l5 (Fig. 3), the plate having an opening 16 around "the base of the motoineter 12%.

Bin elcctrir light 17 is supported on the spring, plate A. preierably by the following construction.

ii metal sleeve in is lined to the end of the arm l-l and a nictal casing 19 fits orsr tho sleeve 18 and engages the plate i i. in insulating bushing 20 and wasl'isr 2i arc clamped to the slcc'vc 18 by nuts 22 on a contact rod extending upward With- Specification of Letters Eatent.

Serial no. 439,349.

in the casing 19 and preferably threaded into an insulating plug fixed in the cas ing; 19.

The light 17 is secured Within the upper cndof the casing 19, as by the usual bayonet lock, and one terminal of the light is connected through the casing 19 to the plate The cther terminal is connected through a yielding'contact pin26 in a sleeve 27, and through a spring 28 to the threaded rod 23.

A contact stud 29 is mounted on a fixed portion of the automobile in position forengagsment by the depending head ofthe rod when the cap 152 is in normal position. The head of the stud 29 is preferably reccs cd to receive the head of the rod 23 and is insulated from the casing 10 by fiber bushings 30 and 31. A wire 32is secured to the stud by a nut 33 and thus connected to one terminal of the light 17.

lbs cap 12 upon which the plate 14 is mounted is commonly .of non-conducting material, the plate being connected by a 5}.)riiip; i -firev 34 to a metallic threaded bush inn" 3-5 Within the cap, which bushing ongagcs the filler pips l1 and thus completes the electric circuit.

A. hood 36 is provided for the light 17, by

Patented Apr. 4. 1922.

which its rays are directed on the instrument and are shielded from the eyes ofthe driver.

In Fig. 2 l have shown a slight modificatiou in which the contact stud 29* is mounted on an arm 37 which is secured to the filler pipe ll by a clamp 88.

Having thus described my invention, it will be seen that- I have provided a simple and practical construction by which electrical connections for the light- 17 will be rod 23 may be raised or hjiwcred as necessarv.

Having thus described my invention it will be evident that changes and modifications can be, maids therein by those skilled in tho art'within the, spirit and scope of my invention asset forth in the claims, and I 

